Change History

That is what is supposed to happen. "Proper" fullscreen can be had by installing the guest additions, which will resize the XP guest's resolution. Please use the forums or the mailing list though, for questions of this sort.

Maybe you missed it in my ticket, but guest additions ARE installed.
The guest is 1024x768x16 and I do not want it to change to 1900x1200. When in full screen I want the guest to stay at 1024x768. I want the guest display to occupy as much space as possible of my hardware screen.
Exactly what happens in VMWare Server: when I go to full screen (Ctrl-Alt-Enter) WinXP 1024x768 extends over my entire hardware screen staying at 1024x768.

In that case, fine, don't change the host resolution - but *do* please scale the guest to the full screen resolution of the host (well, preserving the aspect ratio, at least). I'm not sure how VirtualBox renders the display, but if it's done using a method that uses hardware overlays or SDL/OpenGL, for example, then it should be simple and take minimal CPU time.

Seriously, this is a very, very basic feature that has been missing from VirtualBox from day one and a lot of people would use/need it.

Sophie: see for example ticket #5596. In fact this is currently being worked on, although it is not quite as trivial as you suggest, particularly since we support a number of host systems and several rendering engines.